Question: Name a song written by Lady Gaga.
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P676 wd:Q19848 . ?sbj wdt:P31 wd:Q7366 } 
Answer: Poker Face, Telephone, Born This Way, Just Dance, You and I, LoveGame, Eh, Eh (Nothing Else I Can Say), Scheiße, Dance in the Dark, Beautiful, Dirty, Rich, Christmas Tree, Heavy Metal Lover, Paparazzi, Speechless, Teeth, Government Hooker, So Happy I Could Die, Applause, Venus, Aura, Dope, Gypsy, Artpop, G.U.Y., Swine, Til It Happens to You, Perfect Illusion, A-Yo, John Wayne